Thickness of the superlight aluminium tubes, designed by the SPEED engineers, for the preparation This version of hardtail frame for X Country is distinguished for its special shape, forms and of this unusual frame and for its professional craftsman processing techniques of transformation. The making in pure and superlight aluminium with triple thickness, the “Hydroforming” technology, the professional craftsmanship together with the neat cut, smooth edges of the tubes and its the welding, make it one of the best frames in aluminium for use in X Country available on the market. The frame, after the stress of the manipulation in the work process of the tube (cut, milling, smoothing edges..) and its welding, receives dual heat treatment cycles with controlled temperature enabling the material fibres to relax, helping the aluminium molecules to redistribute evenly throughout the surface of the frame. The result can be tested on the road, or better, off the road.